ls-files.c - git - Git at Google

 /*
  * This merges the file listing in the directory cache index
  * with the actual working directory list, and shows different
  * combinations of the two.
  *
  * Copyright (C) Linus Torvalds, 2005
  */
 #include <dirent.h>
 #include <fnmatch.h>

 #include "cache.h"

 static int show_deleted = 0;
 static int show_cached = 0;
 static int show_others = 0;
 static int show_ignored = 0;
 static int show_stage = 0;
 static int show_unmerged = 0;
 static int show_killed = 0;
 static int line_terminator = '\n';

 static const char *tag_cached = "";
 static const char *tag_unmerged = "";
 static const char *tag_removed = "";
 static const char *tag_other = "";
 static const char *tag_killed = "";

 static int nr_excludes;
 static const char **excludes;
 static int excludes_alloc;

 static void add_exclude(const char *string)
 {
 	if (nr_excludes == excludes_alloc) {
 		excludes_alloc = alloc_nr(excludes_alloc);
 		excludes = realloc(excludes, excludes_alloc*sizeof(char *));
 	}
 	excludes[nr_excludes++] = string;
 }

 static void add_excludes_from_file(const char *fname)
 {
 	int fd, i;
 	long size;
 	char *buf, *entry;

 	fd = open(fname, O_RDONLY);
 	if (fd < 0)
 		goto err;
 	size = lseek(fd, 0, SEEK_END);
 	if (size < 0)
 		goto err;
 	lseek(fd, 0, SEEK_SET);
 	if (size == 0) {
 		close(fd);
 		return;
 	}
 	buf = xmalloc(size);
 	if (read(fd, buf, size) != size)
 		goto err;
 	close(fd);

 	entry = buf;
 	for (i = 0; i < size; i++) {
 		if (buf[i] == '\n') {
 			if (entry != buf + i) {
 				buf[i] = 0;
 				add_exclude(entry);
 			}
 			entry = buf + i + 1;
 		}
 	}
 	return;

 err:	perror(fname);
 	exit(1);
 }

 static int excluded(const char *pathname)
 {
 	int i;
 	if (nr_excludes) {
 		const char *basename = strrchr(pathname, '/');
 		basename = (basename) ? basename+1 : pathname;
 		for (i = 0; i < nr_excludes; i++)
 			if (fnmatch(excludes[i], basename, 0) == 0)
 				return 1;
 	}
 	return 0;
 }

 struct nond_on_fs {
 	int len;
 	char name[0];
 };

 static struct nond_on_fs **dir;
 static int nr_dir;
 static int dir_alloc;

 static void add_name(const char *pathname, int len)
 {
 	struct nond_on_fs *ent;

 	if (cache_name_pos(pathname, len) >= 0)
 		return;

 	if (nr_dir == dir_alloc) {
 		dir_alloc = alloc_nr(dir_alloc);
 		dir = xrealloc(dir, dir_alloc*sizeof(ent));
 	}
 	ent = xmalloc(sizeof(*ent) + len + 1);
 	ent->len = len;
 	memcpy(ent->name, pathname, len);
 	dir[nr_dir++] = ent;
 }

 /*
  * Read a directory tree. We currently ignore anything but
  * directories, regular files and symlinks. That's because git
  * doesn't handle them at all yet. Maybe that will change some
  * day.
  *
  * Also, we currently ignore all names starting with a dot.
  * That likely will not change.
  */
 static void read_directory(const char *path, const char *base, int baselen)
 {
 	DIR *dir = opendir(path);

 	if (dir) {
 		struct dirent *de;
 		char fullname[MAXPATHLEN + 1];
 		memcpy(fullname, base, baselen);

 		while ((de = readdir(dir)) != NULL) {
 			int len;

 			if ((de->d_name[0] == '.') &&
 			    (de->d_name[1] == 0 ||
 			     !strcmp(de->d_name + 1, ".") ||
 			     !strcmp(de->d_name + 1, "git")))
 				continue;
 			if (excluded(de->d_name) != show_ignored)
 				continue;
 			len = strlen(de->d_name);
 			memcpy(fullname + baselen, de->d_name, len+1);

 			switch (DTYPE(de)) {
 			struct stat st;
 			default:
 				continue;
 			case DT_UNKNOWN:
 				if (lstat(fullname, &st))
 					continue;
 				if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
 					break;
 				if (!S_ISDIR(st.st_mode))
 					continue;
 				/* fallthrough */
 			case DT_DIR:
 				memcpy(fullname + baselen + len, "/", 2);
 				read_directory(fullname, fullname,
 					       baselen + len + 1);
 				continue;
 			case DT_REG:
 			case DT_LNK:
 				break;
 			}
 			add_name(fullname, baselen + len);
 		}
 		closedir(dir);
 	}
 }

 static int cmp_name(const void *p1, const void *p2)
 {
 	const struct nond_on_fs *e1 = *(const struct nond_on_fs **)p1;
 	const struct nond_on_fs *e2 = *(const struct nond_on_fs **)p2;

 	return cache_name_compare(e1->name, e1->len,
 				  e2->name, e2->len);
 }

 static void show_killed_files(void)
 {
 	int i;
 	for (i = 0; i < nr_dir; i++) {
 		struct nond_on_fs *ent = dir[i];
 		char *cp, *sp;
 		int pos, len, killed = 0;

 		for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
 			sp = strchr(cp, '/');
 			if (!sp) {
 				/* If ent->name is prefix of an entry in the
 				 * cache, it will be killed.
 				 */
 				pos = cache_name_pos(ent->name, ent->len);
 				if (0 <= pos)
 					die("bug in show-killed-files");
 				pos = -pos - 1;
 				while (pos < active_nr &&
 				       ce_stage(active_cache[pos]))
 					pos++; /* skip unmerged */
 				if (active_nr <= pos)
 					break;
 				/* pos points at a name immediately after
 				 * ent->name in the cache.  Does it expect
 				 * ent->name to be a directory?
 				 */
 				len = ce_namelen(active_cache[pos]);
 				if ((ent->len < len) &&
 				    !strncmp(active_cache[pos]->name,
 					     ent->name, ent->len) &&
 				    active_cache[pos]->name[ent->len] == '/')
 					killed = 1;
 				break;
 			}
 			if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
 				/* If any of the leading directories in
 				 * ent->name is registered in the cache,
 				 * ent->name will be killed.
 				 */
 				killed = 1;
 				break;
 			}
 		}
 		if (killed)
 			printf("%s%.*s%c", tag_killed,
 			       dir[i]->len, dir[i]->name,
 			       line_terminator);
 	}
 }

 static void show_files(void)
 {
 	int i;

 	/* For cached/deleted files we don't need to even do the readdir */
 	if (show_others || show_killed) {
 		read_directory(".", "", 0);
 		qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
 		if (show_others)
 			for (i = 0; i < nr_dir; i++)
 				printf("%s%.*s%c", tag_other,
 				       dir[i]->len, dir[i]->name,
 				       line_terminator);
 		if (show_killed)
 			show_killed_files();
 	}
 	if (show_cached | show_stage) {
 		for (i = 0; i < active_nr; i++) {
 			struct cache_entry *ce = active_cache[i];
 			if (excluded(ce->name) != show_ignored)
 				continue;
 			if (show_unmerged && !ce_stage(ce))
 				continue;
 			if (!show_stage)
 				printf("%s%s%c",
 				       ce_stage(ce) ? tag_unmerged :
 				       tag_cached,
 				       ce->name, line_terminator);
 			else
 				printf("%s%06o %s %d\t%s%c",
 				       ce_stage(ce) ? tag_unmerged :
 				       tag_cached,
 				       ntohl(ce->ce_mode),
 				       sha1_to_hex(ce->sha1),
 				       ce_stage(ce),
 				       ce->name, line_terminator);
 		}
 	}
 	if (show_deleted) {
 		for (i = 0; i < active_nr; i++) {
 			struct cache_entry *ce = active_cache[i];
 			struct stat st;
 			if (excluded(ce->name) != show_ignored)
 				continue;
 			if (!lstat(ce->name, &st))
 				continue;
 			printf("%s%s%c", tag_removed, ce->name,
 			       line_terminator);
 		}
 	}
 }

 static const char *ls_files_usage =
 	"git-ls-files [-z] [-t] (--[cached|deleted|others|stage|unmerged|killed])* "
 	"[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";

 int main(int argc, char **argv)
 {
 	int i;

 	for (i = 1; i < argc; i++) {
 		char *arg = argv[i];

 		if (!strcmp(arg, "-z")) {
 			line_terminator = 0;
 		} else if (!strcmp(arg, "-t")) {
 			tag_cached = "H ";
 			tag_unmerged = "M ";
 			tag_removed = "R ";
 			tag_other = "? ";
 			tag_killed = "K ";
 		} else if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
 			show_cached = 1;
 		} else if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
 			show_deleted = 1;
 		} else if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
 			show_others = 1;
 		} else if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
 			show_ignored = 1;
 		} else if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
 			show_stage = 1;
 		} else if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
 			show_killed = 1;
 		} else if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
 			/* There's no point in showing unmerged unless
 			 * you also show the stage information.
 			 */
 			show_stage = 1;
 			show_unmerged = 1;
 		} else if (!strcmp(arg, "-x") && i+1 < argc) {
 			add_exclude(argv[++i]);
 		} else if (!strncmp(arg, "--exclude=", 10)) {
 			add_exclude(arg+10);
 		} else if (!strcmp(arg, "-X") && i+1 < argc) {
 			add_excludes_from_file(argv[++i]);
 		} else if (!strncmp(arg, "--exclude-from=", 15)) {
 			add_excludes_from_file(arg+15);
 		} else
 			usage(ls_files_usage);
 	}

 	if (show_ignored && !nr_excludes) {
 		fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
 			argv[0]);
 		exit(1);
 	}

 	/* With no flags, we default to showing the cached files */
 	if (!(show_stage | show_deleted | show_others | show_unmerged | show_killed))
 		show_cached = 1;

 	read_cache();
 	show_files();
 	return 0;
 }
	/*
	* This merges the file listing in the directory cache index
	* with the actual working directory list, and shows different
	* combinations of the two.
	*
	* Copyright (C) Linus Torvalds, 2005
	*/
	#include <dirent.h>
	#include <fnmatch.h>

	#include "cache.h"

	static int show_deleted = 0;
	static int show_cached = 0;
	static int show_others = 0;
	static int show_ignored = 0;
	static int show_stage = 0;
	static int show_unmerged = 0;
	static int show_killed = 0;
	static int line_terminator = '\n';

	static const char *tag_cached = "";
	static const char *tag_unmerged = "";
	static const char *tag_removed = "";
	static const char *tag_other = "";
	static const char *tag_killed = "";

	static int nr_excludes;
	static const char **excludes;
	static int excludes_alloc;

	static void add_exclude(const char *string)
	{
	if (nr_excludes == excludes_alloc) {
	excludes_alloc = alloc_nr(excludes_alloc);
	excludes = realloc(excludes, excludes_allocsizeof(char ));
	}
	excludes[nr_excludes++] = string;
	}

	static void add_excludes_from_file(const char *fname)
	{
	int fd, i;
	long size;
	char buf, entry;

	fd = open(fname, O_RDONLY);
	if (fd < 0)
	goto err;
	size = lseek(fd, 0, SEEK_END);
	if (size < 0)
	goto err;
	lseek(fd, 0, SEEK_SET);
	if (size == 0) {
	close(fd);
	return;
	}
	buf = xmalloc(size);
	if (read(fd, buf, size) != size)
	goto err;
	close(fd);

	entry = buf;
	for (i = 0; i < size; i++) {
	if (buf[i] == '\n') {
	if (entry != buf + i) {
	buf[i] = 0;
	add_exclude(entry);
	}
	entry = buf + i + 1;
	}
	}
	return;

	err: perror(fname);
	exit(1);
	}

	static int excluded(const char *pathname)
	{
	int i;
	if (nr_excludes) {
	const char *basename = strrchr(pathname, '/');
	basename = (basename) ? basename+1 : pathname;
	for (i = 0; i < nr_excludes; i++)
	if (fnmatch(excludes[i], basename, 0) == 0)
	return 1;
	}
	return 0;
	}

	struct nond_on_fs {
	int len;
	char name[0];
	};

	static struct nond_on_fs **dir;
	static int nr_dir;
	static int dir_alloc;

	static void add_name(const char *pathname, int len)
	{
	struct nond_on_fs *ent;

	if (cache_name_pos(pathname, len) >= 0)
	return;

	if (nr_dir == dir_alloc) {
	dir_alloc = alloc_nr(dir_alloc);
	dir = xrealloc(dir, dir_alloc*sizeof(ent));
	}
	ent = xmalloc(sizeof(*ent) + len + 1);
	ent->len = len;
	memcpy(ent->name, pathname, len);
	dir[nr_dir++] = ent;
	}

	/*
	* Read a directory tree. We currently ignore anything but
	* directories, regular files and symlinks. That's because git
	* doesn't handle them at all yet. Maybe that will change some
	* day.
	*
	* Also, we currently ignore all names starting with a dot.
	* That likely will not change.
	*/
	static void read_directory(const char path, const char base, int baselen)
	{
	DIR *dir = opendir(path);

	if (dir) {
	struct dirent *de;
	char fullname[MAXPATHLEN + 1];
	memcpy(fullname, base, baselen);

	while ((de = readdir(dir)) != NULL) {
	int len;

	if ((de->d_name[0] == '.') &&
	(de->d_name[1] == 0 \|\|
	!strcmp(de->d_name + 1, ".") \|\|
	!strcmp(de->d_name + 1, "git")))
	continue;
	if (excluded(de->d_name) != show_ignored)
	continue;
	len = strlen(de->d_name);
	memcpy(fullname + baselen, de->d_name, len+1);

	switch (DTYPE(de)) {
	struct stat st;
	default:
	continue;
	case DT_UNKNOWN:
	if (lstat(fullname, &st))
	continue;
	if (S_ISREG(st.st_mode) \|\| S_ISLNK(st.st_mode))
	break;
	if (!S_ISDIR(st.st_mode))
	continue;
	/* fallthrough */
	case DT_DIR:
	memcpy(fullname + baselen + len, "/", 2);
	read_directory(fullname, fullname,
	baselen + len + 1);
	continue;
	case DT_REG:
	case DT_LNK:
	break;
	}
	add_name(fullname, baselen + len);
	}
	closedir(dir);
	}
	}

	static int cmp_name(const void p1, const void p2)
	{
	const struct nond_on_fs e1 = (const struct nond_on_fs **)p1;
	const struct nond_on_fs e2 = (const struct nond_on_fs **)p2;

	return cache_name_compare(e1->name, e1->len,
	e2->name, e2->len);
	}

	static void show_killed_files(void)
	{
	int i;
	for (i = 0; i < nr_dir; i++) {
	struct nond_on_fs *ent = dir[i];
	char cp, sp;
	int pos, len, killed = 0;

	for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
	sp = strchr(cp, '/');
	if (!sp) {
	/* If ent->name is prefix of an entry in the
	* cache, it will be killed.
	*/
	pos = cache_name_pos(ent->name, ent->len);
	if (0 <= pos)
	die("bug in show-killed-files");
	pos = -pos - 1;
	while (pos < active_nr &&
	ce_stage(active_cache[pos]))
	pos++; /* skip unmerged */
	if (active_nr <= pos)
	break;
	/* pos points at a name immediately after
	* ent->name in the cache. Does it expect
	* ent->name to be a directory?
	*/
	len = ce_namelen(active_cache[pos]);
	if ((ent->len < len) &&
	!strncmp(active_cache[pos]->name,
	ent->name, ent->len) &&
	active_cache[pos]->name[ent->len] == '/')
	killed = 1;
	break;
	}
	if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
	/* If any of the leading directories in
	* ent->name is registered in the cache,
	* ent->name will be killed.
	*/
	killed = 1;
	break;
	}
	}
	if (killed)
	printf("%s%.*s%c", tag_killed,
	dir[i]->len, dir[i]->name,
	line_terminator);
	}
	}

	static void show_files(void)
	{
	int i;

	/* For cached/deleted files we don't need to even do the readdir */
	if (show_others \|\| show_killed) {
	read_directory(".", "", 0);
	qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
	if (show_others)
	for (i = 0; i < nr_dir; i++)
	printf("%s%.*s%c", tag_other,
	dir[i]->len, dir[i]->name,
	line_terminator);
	if (show_killed)
	show_killed_files();
	}
	if (show_cached \| show_stage) {
	for (i = 0; i < active_nr; i++) {
	struct cache_entry *ce = active_cache[i];
	if (excluded(ce->name) != show_ignored)
	continue;
	if (show_unmerged && !ce_stage(ce))
	continue;
	if (!show_stage)
	printf("%s%s%c",
	ce_stage(ce) ? tag_unmerged :
	tag_cached,
	ce->name, line_terminator);
	else
	printf("%s%06o %s %d\t%s%c",
	ce_stage(ce) ? tag_unmerged :
	tag_cached,
	ntohl(ce->ce_mode),
	sha1_to_hex(ce->sha1),
	ce_stage(ce),
	ce->name, line_terminator);
	}
	}
	if (show_deleted) {
	for (i = 0; i < active_nr; i++) {
	struct cache_entry *ce = active_cache[i];
	struct stat st;
	if (excluded(ce->name) != show_ignored)
	continue;
	if (!lstat(ce->name, &st))
	continue;
	printf("%s%s%c", tag_removed, ce->name,
	line_terminator);
	}
	}
	}

	static const char *ls_files_usage =
	"git-ls-files [-z] [-t] (--[cached\|deleted\|others\|stage\|unmerged\|killed])* "
	"[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";

	int main(int argc, char **argv)
	{
	int i;

	for (i = 1; i < argc; i++) {
	char *arg = argv[i];

	if (!strcmp(arg, "-z")) {
	line_terminator = 0;
	} else if (!strcmp(arg, "-t")) {
	tag_cached = "H ";
	tag_unmerged = "M ";
	tag_removed = "R ";
	tag_other = "? ";
	tag_killed = "K ";
	} else if (!strcmp(arg, "-c") \|\| !strcmp(arg, "--cached")) {
	show_cached = 1;
	} else if (!strcmp(arg, "-d") \|\| !strcmp(arg, "--deleted")) {
	show_deleted = 1;
	} else if (!strcmp(arg, "-o") \|\| !strcmp(arg, "--others")) {
	show_others = 1;
	} else if (!strcmp(arg, "-i") \|\| !strcmp(arg, "--ignored")) {
	show_ignored = 1;
	} else if (!strcmp(arg, "-s") \|\| !strcmp(arg, "--stage")) {
	show_stage = 1;
	} else if (!strcmp(arg, "-k") \|\| !strcmp(arg, "--killed")) {
	show_killed = 1;
	} else if (!strcmp(arg, "-u") \|\| !strcmp(arg, "--unmerged")) {
	/* There's no point in showing unmerged unless
	* you also show the stage information.
	*/
	show_stage = 1;
	show_unmerged = 1;
	} else if (!strcmp(arg, "-x") && i+1 < argc) {
	add_exclude(argv[++i]);
	} else if (!strncmp(arg, "--exclude=", 10)) {
	add_exclude(arg+10);
	} else if (!strcmp(arg, "-X") && i+1 < argc) {
	add_excludes_from_file(argv[++i]);
	} else if (!strncmp(arg, "--exclude-from=", 15)) {
	add_excludes_from_file(arg+15);
	} else
	usage(ls_files_usage);
	}

	if (show_ignored && !nr_excludes) {
	fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
	argv[0]);
	exit(1);
	}

	/* With no flags, we default to showing the cached files */
	if (!(show_stage \| show_deleted \| show_others \| show_unmerged \| show_killed))
	show_cached = 1;

	read_cache();
	show_files();
	return 0;
	}